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This is a prospective, randomized study of total hip arthroplasty with and without the use of Radlink surgical positioning software. The investigators are interested in discovering whether the use of the Radlink software will provide more accurate acetabular cup position when compared with surgeon estimates based on visual inspection of fluoroscopic images.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Control | No Intervention | Intraoperative fluoroscopy of the hip is used to visually estimate the acetabular cup angle and make any necessary adjustments. | |
| Radlink Surgical Positioning System | Experimental | Fluoroscopic image of the hip joint is imported into the Radlink Surgical Positioning software. The software calculates a target cup position using bony landmarks, and the surgeon matches the cup to the target. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Radlink Surgical Positioning Software | Other |
|
| Measure | Description | Time Frame |
|---|---|---|
| Radiographic cup abduction angle | Angle of acetabular component in coronal plane measured on x-ray | 4 month postoperative |
| Radiographic cup anteversion angle | Angle of acetabular component in sagittal plane measured on x-ray | 4 month postoperative |
| Measure | Description | Time Frame |
|---|---|---|
| Variance of cup angles measured on x-ray | Statistical homogeneity of angles and how spread out the data is. | 4 month postoperative |
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Inclusion Criteria:
Exclusion Criteria:
-
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| Name | Affiliation | Role |
|---|---|---|
| William G Hamilton, MD | AORI (Anderson Orthopaedic Research Institute) | Principal Investigator |
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